James Leon Williams (April 18, 1852 – February 23, 1932) was an American

prosthodontist Prosthodontics, also known as dental prosthetics or prosthetic dentistry, is the area of dentistry that focuses on dental prostheses. It is one of 12 dental specialties recognized by the American Dental Association (ADA), Royal College of Sur ...

and a pioneer dental

histologist Histology, also known as microscopic anatomy or microanatomy, is the branch of biology which studies the microscopic anatomy of biological tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures vis ...

.Shklar, G; Carranza, FA: The Historical Background of Periodontology. In Newman, MG; Takei, HH; Carrana FA, editors: ''Carranza’s Clinical Periodontology'', 9th Edition. Philadelphia: W.B. Saunders Company, 2002. page 8. He discovered the significance

dental plaque Dental plaque is a biofilm of microorganisms (mostly bacteria, but also fungi) that grows on surfaces within the mouth. It is a sticky colorless deposit at first, but when it forms tartar, it is often brown or pale yellow. It is commonly found be ...

Biography

In 1785, Leon's great-grandfather, Jacob Williams, a

U.S. Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cl ...

captain during the

American Revolution The American Revolution was an ideological and political revolution that occurred in British America between 1765 and 1791. The Americans in the Thirteen Colonies formed independent states that defeated the British in the American Revoluti ...

, settled in

Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and ...

. A native of

Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...

, he had a son, Richard, around the year 1794. On May 25, 1829, Richard had a son, Calvin, who would be Leon's father. Sometime around 1879, J. Leon Williams began a two-year

apprenticeship Apprenticeship is a system for training a new generation of practitioners of a trade or profession with on-the-job training and often some accompanying study (classroom work and reading). Apprenticeships can also enable practitioners to gain a ...

by a Dr. Roberts in North Vassalboro,

and later began practicing in the same town. Williams later passed examinations for the DDS degree at the

Baltimore College of Dental Surgery The University of Maryland School of Dentistry is the dental school of the University System of Maryland. It was founded as an independent institution, the Baltimore College of Dental Surgery, in 1840 and was the birthplace of the Doctor of Dent ...

and the equivalent

LDS LDS may refer to: Organizations * LDS Hospital, Salt Lake City, Utah, US Religion * Latter Day Saint movement (LDS movement), a collection of independent church groups **The Church of Jesus Christ of Latter-day Saints, the largest group within t ...

degree in

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

. He joined the Maine Dental Society and used the opportunity to borrow their

microscope A microscope () is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisi ...

to study the histology and

pathology Pathology is the study of the causes and effects of disease or injury. The word ''pathology'' also refers to the study of disease in general, incorporating a wide range of biology research fields and medical practices. However, when used in ...

tooth enamel Tooth enamel is one of the four major tissues that make up the tooth in humans and many other animals, including some species of fish. It makes up the normally visible part of the tooth, covering the crown. The other major tissues are dentin, ...

. In the early 1880s, common

crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, partic ...

and

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

techniques were not well known or widespread. Williams sought to make information on these techniques available to all dentists through the pages of ''The Dental Cosmos''. In 1885, he embarked on a journey to improve the state of dental prostheses by designing more aesthetic artificial teeth that better matched the overall facial dimensions of the patient. He convinced an American artificial tooth manufacturer to take up his cause and produce his designs, on the condition that other dentists would embrace the new forms. Williams also practiced dentistry in

London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

and was one of the founders of the International Association for Dental Research. He also was the author of ''The Home and Haunts of Shakespeare'' and had an interest in anthropology, including the

Piltdown Man The Piltdown Man was a paleoanthropological fraud in which bone fragments were presented as the fossilised remains of a previously unknown early human. Although there were doubts about its authenticity virtually from the beginning, the remains ...

. - See also footnote 62 in chapter 3 of

References

External links

* - Williams as a photographer 1852 births 1932 deaths Periodontists {{dentistry-stub